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  • Title: Alkaline bismuth solution as an en bloc stain for formaldehyde-glutaraldehyde potassium permanganate fixed fungal spores.
    Author: Park P, Ohno T, Kawa Y, Manabe S.
    Journal: Stain Technol; 1988 Jul; 63(4):229-34. PubMed ID: 2464209.
    Abstract:
    An alkaline solution of bismuth subnitrate reacted well with the cell membranes and cell walls of formaldehyde-glutaraldehyde potassium permanganate fixed Alternaria spores, demonstrating them with greater contrast than in sections stained with uranyl acetate and lead citrate. Optimal fine structure of fungal spores was obtained by en bloc staining with alkaline bismuth solution after aldehyde and permanganate fixation. The contrast of the cell organelles and cell walls was high enough in sections cut after the alkaline bismuth en bloc stain for direct ultrastructural observation. Our results indicate that the alkaline bismuth stain is useful either as an en bloc or section stain for aldehyde and permanganate fixed fungal spores.
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